Coal Ash Pathways to Surface Water (IMAGE) Duke University Caption Researchers who analyzed bottom sediments from five North Carolina lakes near coal-fired power plants say coal ash contamination has entered the lakes by three different routes. Credit Wang et al, Environmental Science and Technology Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.